PRESSURE REDUCING VALVE DREE30-6X/200YMG24K31A1M
Manufacturer: Bosch Rexroth
Material #: R901387950
Model : DREE30-6X/200YMG24K31A1M
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth DREE30-6X/200YMG24K31A1M (R901387950) is a high-performance industrial hydraulic valve designed for reliable pressure reduction to a set command value signal. This valve features a size B, subplate mounting conforming to CETOP D and ISO standards, with an electrical connection described as Connector pole PE according to DIN EN. The maximum operating pressure for this device is bar, and it can handle a maximum flow of l/min.
Equipped with integrated electronics for ease of operation, the DREE30-6X/200YMG24K31A1M utilizes electrical actuation with the convenience of a proportional solenoid that has rotatable and detachable coil features. The valve is constructed to ensure consistent performance with NBR seals and compatibility with various hydraulic fluids including HL, HLP, HLPD, HVLP, HVLPD, and HFC.
This model includes an optional check valve between ports A and B and offers an optional spring-loaded pressure relief valve for maximum pressure limitation. The device guarantees safety against excessive pressures due to high electric control current at the proportional solenoid. Additionally, it has a pressure gauge connection for monitoring reduced pressure in channel A.
The Bosch Rexroth DREE30-6X/200YMG24K31A1M valve stands out for its precision in controlling hydraulic pressures in complex systems while providing robust construction and reliable operation under varying conditions. Its integrated electronics (OBE) ensures that both the valve and control electronics are sourced from a single point for optimal compatibility and performance.
$4,243.00 USD
More are expected on October 8, 2024
Status: This product is temporarily out of stock.
Qty: Delivered as early as October 8, 2024 when ordered in
This product is eligible for factory repair.
Size 30, B → A, electrical with integrated electronics, 24 VDC
Industrial hydraulic valve in a high performance range. Reliable reduction of the pressure to the command value signal.
Unpacked Weight: 9.480 kg
Valve for reducing a system pressure Operation by means of a proportional solenoid Proportional solenoid with rotatable and detachable coil For subplate mounting: porting pattern according to ISO 5781 Optional check valve between A and B Optional maximum pressure limitation Integrated electronics (OBE) Valve and control electronics from a single source
Valves of type DRE(M)E are pilot-operated pressure reducing valves. They are used for operating pressure reduction.
These valves basically consist of a pilot control valve (1) with proportional solenoid (2), a main valve (3) with main spool insert (4), as well as an optional check valve (5). On the proportional solenoid, there is moreover a housing (15) with the control electronics. Supply and command value voltage are applied at the connector (16).
At the factory, the command value pressure characteristic curve is adjusted with little manufacturing tolerance.
Type DREE...
The pressure in channel A is set in a command value-dependent form via the proportional solenoid (2).
In rest position – no pressure in channel B –, the spring (11) holds the main spool (4) in its initial position. The connection from channel B to A is open.
The pressure in channel A acts on the bottom side of the main spool in closing direction, and the pressure of the pilot control valve on the spring side of the main spool in the opening direction from channel B to A.
The pilot oil is taken from channel B and flows through the bore (6) to the constant-current control (9) which keeps the pilot flow constant independent of the pressure drop between channel A and B. From the constant-current control (9), the pilot flow flows through the bores (7) via the valve seat (10), passes the valve poppet (8) and is directed into channel Y to the tank.
The pressure required in channel A is preset at the related amplifier. The proportional solenoid pushes the valve poppet (8) in the direction of the valve seat (10) and limits the pressure in the spring chamber (12) to the set value. In the control position of the main spool (4), the hydraulic fluid flows from channel B to A and generates the pressure in channel A (setting of the pilot control valve plus spring (11)). If the set pressure in A is achieved, the forces at the main spool are balanced.
If the actuator at port A does not move (e. g. cylinder piston at stop) and a lower pressure is set for channel A via the proportional solenoid (2), the main spool (4) closes the connection from B to A and simultaneously opens the connection from channel A to the spring chamber (12) of the main spool (4). In this position, the compression volume in channel A can expand via the pilot control valve (1) and port Y.
For the free flow back from channel A to B, a check valve (5) can optionally be installed.
A pressure gauge connection (13) allows for the control of the reduced pressure in channel A.
Type DREME...
For hydraulic protection against an inadmissibly high electric control current at the proportional solenoid, which imperatively results in excessive pressures in port A, you can optionally install a spring-loaded pressure relief valve as maximum pressure limitation (14). The maximum pressure limitation is pre-set based on the relevant pressure rating.
(measured with HLP46, ϑOil = 40 ±5 °C)
Pressure in port P dependent on the command value (flow = 0.8 l/min)
Type DRE(M)E
Pressure in channel A dependent on command value (measured with a flow of 0 l/min from B to A as well as related control electronics)
Pressure rating 50 bar
Pressure rating 100 bar
Pressure rating 200 bar
Pressure rating 315 bar
Comparison series 4X-6X / pressure rating 50 bar (with amplifier VT-VSPA1-1-1X with 800 mA coil)
Comparison series 4X-6X / pressure rating 100 bar (with amplifier VT-VSPA1-1-1X with 800 mA coil)
Comparison series 4X-6X / pressure rating 200 bar (with amplifier VT-VSPA1-1-1X with 800 mA coil)
Comparison series 4X-6X / pressure rating 315 bar (with amplifier VT-VSPA1-1-1X with 800 mA coil)
Pressure rating 200 bar (with VT-SSPA1)
Pressure in channel A dependent on the flow Qv
Pressure rating 50 bar
Pressure rating 100 bar
Pressure rating 200 bar
Pressure rating 315 bar
Pressure in port A dependent on pressure in port B
pmin - Qv characteristic curve
Pressure differential from A to B via the check valve
Type DREE-6X/...YM...
Type DREME-6X/...YM...
Type DREE-6X/...Y...
Type DREME-6X/...Y...
|
Pin assignment |
Contact |
Assignment interface "A1" |
Assignment interface "F1" |
|
Power supply |
A |
24VDC(u(t)=21...35V);Imax≤1,5A |
|
|
B |
0V |
||
|
Reference potential actual value |
C |
Reference contact F; 0 V |
Reference contact F; 0 V |
|
Differential amplifier input (command value) |
D |
0 ... 10 V; Re = 100 kΩ |
4 ... 20 mA; Re = 100 kΩ |
|
E |
Reference potential command value |
||
|
Measuring output (actual value) |
F |
0 to 1.6 V actual value (1 mV ≙ 1 mA); |
|
|
PE |
connected to solenoid and valve housing |
||
Connection cable
| 1) | Connection cable:- Recommendation 6-wire, 0.75 or 1mm2 plus protective earthing conductor and screening- Connect screening to PE on supply side only- Maximum admissible length 100 m The minimum supply voltage at the power supply unit depends on the length of the supply line (see diagram) |
Integrated electronics (OBE)
Function
The electronics are supplied with voltage via ports A and B. The command value is applied to the differential amplifier ports D and E.Via the characteristic curve generator, the command value solenoid current characteristic curve is adjusted to the valve so that non-linearities in the hydraulic system are compensated and thus, a linear command value pressure characteristic curve is created.The current controller controls the solenoid current independently of the solenoid coil resistance.The power stage of the electronics for controlling the proportional solenoid is a chopper amplifier with a clock frequency of approx. 180 Hz to 400 Hz. The output signal is pulse-width modulated (PWM). For checking the solenoid current, a voltage can be measured at the connector between pin F(+) and pin C(–) which is proportional to the solenoid current. 1 mV corresponds to 1 mA solenoid current.
Block diagram / pin assignment
|
1 |
Upon delivery, this port (G1/4) is closed. After removal of the blanking plug, an external and separate depressurized pilot oil return to the tank is, however, also possible here. |
|
2 |
Space required to remove the mating connector |
|
3 |
Name plate |
|
4 |
Maximum pressure limitation with version DREM and DREME |
|
5 |
Check valve, optional |
|
6 |
Locating pin |
|
7 |
Pilot oil return always external, separate and depressurized to the tank |
|
8 |
Blind counterbore |
|
9 |
Identical seal rings for ports A and B |
|
10 |
Identical seal rings for port Y and blind counterbore (pos. 8) |
|
11 |
Pressure gauge connection G1/4; 12 deep |
|
12 |
mating connector according to DIN EN 175301-803 |
|
13 |
Mating connector according to DIN EN 175201-804 |
|
14 |
Integrated electronics (OBE) |
|
15 |
Space required to remove the mating connector |
|
16 |
Cable fastening |
Recommended valve mounting screws (separate order):
6 hexagon socket head cap screws ISO 4762 - M10 x 70 - 10.9-flZn-240h-L
(Friction coefficient μtotal = 0.09 to 0.14)
Tightening torque MA = 60 Nm ± 10%
Material no. R00002245 (separate order) or
6 hexagon socket head cap screws ISO 4762 - M10 x 70 - 10.9
(Friction coefficient μtotal = 0.12 to 0.17)
Tightening torque MA = 75 Nm ± 10%
Notice:
The dimensions are nominal dimensions which are subject to tolerances.
Mating connectors for valves with round connector, 6-pole + PE
7P Z31
Mating connectors for valves with round connector, 6-pole + PE
7P Z31
For valves with round connector according to EN 175201-804, 6-pole + PE as well as 6-pole, compatible with VG 95328Data sheet
Spare parts & repair
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